Android browsers can already add pages to home screen but Hermit takes this even futher.
It has significantly better UX with frameless and full screen modes. You can bookmark pages, so on Lemmy you can quickly bookmark community in specific sorting order. There are user scripts and blockers and loads of customization. You can even add push notifications for changes on the site or RSS feed.
I’ve been running most Fediverse web apps through Hermit and it works really well! The only exception is that I couldn’t figure out how to setup notifications on Mastodon.
It works fairly well.
It does have the drawback of only being able to be logged in on one account per instance, so if you share a device with someone, or just use multiple accounts yourself, you’ll have to switch manually.
It isn’t quite as good as a well built app because it’s just a browser with tricks, but you have full access feature wise, and it’s “good enough”
You can create lite app for each account. You can even duplicate existing ones to retain the same settings.
Counting the default and the additional 5 sandboxes you get 6 account logins for the same site. Sharing your device is not a typical use case but happens. You can send a suggestion to the dev to increase the sandbox count. Perhaps, he can increase it higher to fit your use case.
But, I think better would be to install hermit in a seperate android profile alongside the apps the mentioned person would use. Seperating your and his/her account data would be better.